Catalyst АОК-78-61


Hydrogen sulfide oxidation (Claus Process)

Product Type

Alumina catalyst АОК-78-61 is used in Sulfur Recovery Units (SRU) as active bed support. Applied in refining and petrochemicals, gas plants and metal manufacturing.

АОК-78-61 ensures catalytic activity and unlike inert ceramic balls used as a bed support, provides an extended service life of the catalyst bed. More than 20 years of commercial experience.

АОК-78-61 active bed support is available in spheres with diameter 8-10 and 10-17 мм.


The catalyst is used to improve gas distribution in reactors, operates as a support layer and also as a catalyst for sulfur manufacturing. Catalyst АОК-78-61 can be loaded as a support bed into all SRU compartments (Claus process).

It is recommended to use alumina catalyst AOK-78-59 or titanium dioxide catalyst AOK-75-46 as a base catalyst.

Engineering Services

SRU Performance analysis Calculation of H2S conversion rate for thermal and catalytic stages Providing recommendations on optimal plant operating conditions Tailoring optimal catalyst loading Investigation on physico-chemical and catalytic performance of the fresh and spent catalysts Supervision of catalyst loading SRU operation lifetime monitoring
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